var data = [    
    {year: 1950, index: 17.05},
    {year: 1951, index: 21.66},
    {year: 1952, index: 24.14},
    {year: 1953, index: 26.38},
    {year: 1954, index: 26.08},
    {year: 1955, index: 36.63},
    {year: 1956, index: 43.82},
    {year: 1957, index: 44.72},
    {year: 1958, index: 41.70},
    {year: 1959, index: 55.45},
    {year: 1960, index: 55.61},
    {year: 1961, index: 61.78},
    {year: 1962, index: 68.84},
    {year: 1963, index: 66.20},
    {year: 1964, index: 77.04},
    {year: 1965, index: 87.56},
    {year: 1966, index: 92.88},
    {year: 1967, index: 86.61},
    {year: 1968, index: 92.24},
    {year: 1969, index: 103.01},
    {year: 1970, index: 85.02},
    {year: 1971, index: 95.88},
    {year: 1972, index: 103.94},
    {year: 1973, index: 116.03},
    {year: 1974, index: 96.57},
    {year: 1975, index: 76.98},
    {year: 1976, index: 100.86},
    {year: 1977, index: 102.03},
    {year: 1978, index: 89.25},
    {year: 1979, index: 99.93},
    {year: 1980, index: 114.16},
    {year: 1981, index: 129.55},
    {year: 1982, index: 120.40},
    {year: 1983, index: 145.30},
    {year: 1984, index: 163.41},
    {year: 1985, index: 179.63},
    {year: 1986, index: 211.78},
    {year: 1987, index: 274.08},
    {year: 1988, index: 257.07},
    {year: 1989, index: 297.47},
    {year: 1990, index: 329.08},
    {year: 1991, index: 343.93},
    {year: 1992, index: 408.78},
    {year: 1993, index: 438.78},
    {year: 1994, index: 481.61},
    {year: 1995, index: 470.42},
    {year: 1996, index: 636.02},
    {year: 1997, index: 786.16},
    {year: 1998, index: 980.28},
    {year: 1999, index: 1279.64},
    {year: 2000, index: 1394.46},
    {year: 2001, index: 1366.01},
    {year: 2002, index: 1130.20},
    {year: 2003, index: 855.70},
    {year: 2004, index: 1131.13},
    {year: 2005, index: 1181.27},
    {year: 2006, index: 1280.08},
    {year: 2007, index: 1438.24},
    {year: 2008, index: 1378.55},
    {year: 2009, index: 825.88},
    {year: 2010, index: 1073.87},
    {year: 2011, index: 1286.12}
]
